JP7059940B2 - Projection system, projection device and cradle - Google Patents

Description

This technique relates to a projection system. More specifically, the present invention relates to a projection device that projects an image, a cradle that changes the posture of the projection device, and a projection system including the projection device.

Conventionally, a projector that projects an image on a projection surface such as a screen or a wall surface has been widely used. It is also known that the function of this projector is incorporated into a portable electronic device. For example, a portable electronic device having a function of a projector and changing the projected content and the display content of the projector according to a change and an amount of change in the posture of the portable electronic device has been proposed (see, for example, Patent Document 1). .).

Japanese Unexamined Patent Publication No. 2012-138686

In the above-mentioned conventional technique, the projection content and the display content are changed according to an intuitive operation in which the user changes the posture of the portable electronic device. However, if the device that the user directly operates and the device that performs the projection are integrated, the user must always be aware of the projection surface, which may cause inconvenience in actual use. Further, when the function of the projector is added as a part of the function of the portable electronic device, it is considered that the performance such as the resolution and the amount of light emission is inferior to that of the dedicated projector.

This technique was created in view of such a situation, and aims to perform high-performance projection by intuitive operation with a mobile terminal.

This technology was made to solve the above-mentioned problems, and the first aspect is a mobile terminal that detects a change in its own posture and a projection that reproduces a video signal and projects it on a projection surface. It is a projection system including a device and a cradle that supports the projection device and changes the posture of the projection device according to the detection result of the mobile terminal. This has the effect of changing the posture of the projection device according to the detection result of the mobile terminal.

Further, in the first aspect, the mobile terminal may detect the change in posture by at least one sensor of an acceleration sensor and a gyro sensor. This has the effect of detecting a change in posture based on at least one of acceleration and angular velocity.

Further, in the first aspect, the cradle includes a motor that changes the posture of the projection device and a motor drive unit that drives the motor, and any one of the mobile terminal, the projection device, and the cradle A control signal generation unit that generates a control signal for driving the motor based on a change in the posture of the mobile terminal may be provided. This has the effect of driving the motor of the cradle to change the attitude of the projection device.

Further, in the first aspect, the mobile terminal may supply the video signal to the projection device. This has the effect of projecting the video signal supplied from the video signal from the projection device.

Further, in the first aspect, the projection device may include a storage unit for storing the video signal, and may read the video signal from the storage unit to perform the reproduction. This has the effect of projecting the video signal stored in the storage unit of the projection device.

Further, in the first aspect, the mobile terminal includes a first audio output unit, the projection device includes a second audio output unit, and the first and second audio output units are described above. It is also possible to output different audio signals corresponding to the video signals. This has the effect of outputting different audio signals from the mobile terminal and the projection device.

Further, in the first aspect, a plurality of sets may be provided with the mobile terminal, the projection device and the cradle as one set. This has the effect of projecting different images from the projection device according to the detection results of a plurality of mobile terminals.

The second aspect of the present technology is a detection signal receiving unit that receives a change in the posture of the mobile terminal as a detection result, and a control signal that generates a control signal for changing its own posture based on the detection result. It is a projection device including a generation unit, a control signal transmission unit that transmits the control signal to a cradle for supporting itself, and a projection unit that projects a video signal in a projection direction based on the detection result. This has the effect of changing the posture of the projection device by driving the motor of the cradle according to the detection result of the mobile terminal.

Further, the third aspect of the present technology is a detection signal receiving unit that receives a change in the posture of the mobile terminal as a detection result, and a control signal that generates a control signal for changing its own posture based on the detection result. A projection device including a generation unit, a motor that changes its own posture, a motor drive unit that drives the motor according to the control signal, and a projection unit that projects a video signal in a projection direction based on the detection result. be. This has the effect of changing the posture of the projection device by driving the motor of the projection device according to the detection result of the mobile terminal.

The fourth aspect of the present technology is a detection signal receiving unit that receives a change in the posture of the mobile terminal as a detection result, a motor that changes the posture of the projection device, and driving the motor based on the detection result. It is a cradle that supports the projection device by including a control signal generation unit that generates a control signal for the purpose of the control signal and a motor drive unit that drives the motor according to the control signal. This has the effect of changing the posture of the projection device by driving the motor of this cradle according to the detection result of the mobile terminal.

According to this technique, it is possible to obtain an excellent effect that high-performance projection can be performed by intuitive operation by a mobile terminal. The effects described herein are not necessarily limited, and may be any of the effects described in the present disclosure.

It is a figure which shows the whole structure example of the projection system in embodiment of this technique. It is a figure which shows the functional structure example of the projection system in 1st Embodiment of this technique. It is a sequence diagram which shows the 1st example of the operation of the projection system in 1st Embodiment of this technique. It is a sequence diagram which shows the 2nd example of the operation of the projection system in 1st Embodiment of this technique. It is a sequence diagram which shows the 3rd example of the operation of the projection system in 1st Embodiment of this technique. It is a figure which shows the 1st application example of the projection system in 1st Embodiment of this technique. It is a figure which shows the 2nd application example of the projection system in 1st Embodiment of this technique. It is a figure which shows the 3rd application example of the projection system in 1st Embodiment of this technique. It is a figure which shows the image example in the 4th application example of the projection system in the 1st Embodiment of this technique. It is a figure which shows the 4th application example of the projection system in 1st Embodiment of this technique. It is a figure which shows the 1st modification of the projection system in 1st Embodiment of this technique. It is a figure which shows the 2nd modification of the projection system in 1st Embodiment of this technique. It is a figure which shows the functional structure example of the projection system in the 2nd Embodiment of this technique. It is a sequence diagram which shows the 1st example of the operation of the projection system in the 2nd Embodiment of this technique. It is a sequence diagram which shows the 2nd example of the operation of the projection system in the 2nd Embodiment of this technique. It is a figure which shows the functional structure example of the projection system in the 3rd Embodiment of this technique. It is a sequence diagram which shows the 1st example of the operation of the projection system in 3rd Embodiment of this technique. It is a sequence diagram which shows the 2nd example of the operation of the projection system in the 3rd Embodiment of this technique.

Hereinafter, embodiments for carrying out the present technology (hereinafter referred to as embodiments) will be described. The explanation will be given in the following order.
1. 1. First embodiment (example of transmitting the posture change of the mobile terminal to the projection device)
2. 2. Second embodiment (example of transmitting the posture change of the mobile terminal to the cradle)
3. 3. Third embodiment (example of the projection device changing its posture)

<1. First Embodiment>
[Projection system configuration]
FIG. 1 is a diagram showing an overall configuration example of a projection system according to an embodiment of the present technology. The projection system includes a mobile terminal 100, a projection device 200, and a cradle 300.

The mobile terminal 100 is a portable terminal device to be operated by a user, and is assumed to be, for example, a smartphone or a tablet terminal. The user holds the mobile terminal 100 in his / her hand and operates while changing the posture of the mobile terminal 100 up / down / left / right. This change in posture of the mobile terminal 100 is detected inside the mobile terminal 100, and the detection result is transmitted to the outside of the mobile terminal 100.

The projection device 200 reproduces a video signal and projects it onto the projection surface 600. The projection device 200 is mounted on the cradle 300 at the time of projection.

The cradle 300 mounts and supports the projection device 200. The cradle 300 is equipped with a motor and can rotate up, down, left and right according to the detection result of the mobile terminal 100. That is, the posture of the projection device 200 changes depending on the operation of the cradle 300.

For example, when an image is projected at the position 601 of the projection surface 600, when the mobile terminal 100 moves horizontally to the left or is tilted to the left, the change in the posture of the mobile terminal 100 changes to the mobile terminal 100. Detected within. The detection result is transmitted to the outside of the mobile terminal 100 and supplied to the cradle 300 via the projection device 200 or directly. The cradle 300 rotates in a direction corresponding to the change in its posture, and changes the posture of the projection device 200. As a result, the projection position of the image by the projection device 200 changes from the position 601 to the position 602.

FIG. 2 is a diagram showing a functional configuration example of the projection system according to the first embodiment of the present technology. In this first embodiment, the detection result of the posture change detected in the mobile terminal 100 is supplied to the cradle 300 via the projection device 200.

The mobile terminal 100 includes a processor 110, a gyro sensor 130, an acceleration sensor 140, a short-range wireless communication unit 180, and a network communication unit 190. The processor 110 is a processing device that controls each part of the mobile terminal 100.

The gyro sensor 130 is an angular velocity sensor that detects the angular velocity of the mobile terminal 100 in the three-dimensional direction. When the mobile terminal 100 rotates in a certain direction, the gyro sensor 130 outputs the angular velocity of the rotation. The angular velocity obtained by this gyro sensor 130 is an angle per unit time.

The acceleration sensor 140 is an acceleration sensor that detects the acceleration of the mobile terminal 100 in the three-dimensional direction. When the mobile terminal 100 moves in a certain direction, the acceleration sensor 140 outputs the acceleration of the movement. The acceleration obtained by the acceleration sensor 140 is the rate at which the speed changes per unit time.

By combining the detection results of the gyro sensor 130 and the acceleration sensor 140, it is possible to detect the direction of inclination when the mobile terminal 100 is tilted and the direction of movement when the mobile terminal 100 is moved. For example, when a user holding the mobile terminal 100 moves (slides) the mobile terminal 100 left and right in parallel, the moving direction is detected. Further, when the user holding the mobile terminal 100 tilts the mobile terminal 100 to the left or right, the direction of the tilt is detected. Further, since the detected acceleration differs between the case where the user holding the mobile terminal 100 in his hand tilts the mobile terminal 100 back and forth in front and the case where the mobile terminal 100 is swung up and down greatly, it is detected by the acceleration sensor 140. By referring to the result, it is possible to distinguish between the two.

Although the gyro sensor 130 and the acceleration sensor 140 are exemplified here as the sensors provided in the mobile terminal 100, the mobile terminal 100 may be provided with other sensors such as a barometric pressure sensor and a geomagnetic sensor.

The short-range wireless communication unit 180 performs short-range wireless communication with the projection device 200. Here, as the short-range wireless communication, for example, "Bluetooth (registered trademark) Low Energy" is assumed. Generally, in short-range wireless communication, the data transfer rate is also set low in order to keep the power consumption low. Therefore, in the present embodiment, it is assumed that the short-range wireless communication unit 180 is used to transmit the detection result obtained by the gyro sensor 130 and the acceleration sensor 140 instead of the video signal. In this embodiment, it is assumed that the detection results obtained by the gyro sensor 130 and the acceleration sensor 140 are transferred via short-range wireless communication, but other wireless communication such as wireless LAN or by wire is used. It may be transferred by connection.

The network communication unit 190 performs network communication with the projection device 200. Here, as the network communication, for example, a wireless LAN such as WiFi (registered trademark) is assumed. In the present embodiment, it is assumed that the network communication unit 190 is used for transferring a video signal.

The projection device 200 includes a processor 210, a memory 220, a projection unit 240, a short-range wireless communication unit 280, and a network communication unit 290.

The processor 210 is a processing device that controls each part of the projection device 200. The memory 220 is a memory for storing data and the like necessary for the operation of the processor 210. For example, the memory 220 stores a video signal received from the mobile terminal 100. The processor 210 performs a reproduction process of the video signal stored in the memory 220. The memory 220 is an example of the storage unit described in the claims.

The projection unit 240 projects the image reproduced by the processor 210 onto the projection surface. The projection unit 240 projects an image onto a projection surface using a light source such as a lamp or a laser. In particular, when a laser light source is used, pointillism is drawn by scanning on the projection surface, so that it is possible to focus at all positions on the projection surface without brightening the black portion.

The short-range wireless communication unit 280 performs short-range wireless communication with the mobile terminal 100. The short-range wireless communication unit 280 receives the detection result by the gyro sensor 130 and the acceleration sensor 140 transmitted from the mobile terminal 100, and supplies the detection result to the processor 210.

The network communication unit 290 performs network communication with the mobile terminal 100. The network communication unit 290 receives the video signal transferred from the mobile terminal 100 and supplies the video signal to the processor 210.

The cradle 300 includes a processor 310, a motor drive unit 350, and a motor 360.

The processor 310 is a processing device that controls each part of the cradle 300. The motor 360 is a power source that generates power for rotating the projection device 200 mounted on the cradle 300 up, down, left, and right. As the motor 360, for example, a stepping motor is assumed. The motor drive unit 350 is a mechanism for driving the motor 360.

When the projection device 200 is mounted on the cradle 300, the processor 310 and the processor 210 are electrically connected to each other. Therefore, the processor 310 of the cradle 300 can receive the detection result by the gyro sensor 130 and the acceleration sensor 140 from the processor 210 of the projection device 200. The processor 310 generates a control signal that changes the posture of the projection device 200 according to the detection result. The motor drive unit 350 drives the motor 360 according to the generated control signal. As a result, the projection position of the image by the projection device 200 changes based on the change in the posture of the mobile terminal 100.

The processors 110, 210, and 310 are examples of the control signal generation unit described in the claims. Further, the processor 210 is an example of the control signal transmission unit described in the claims. Further, the processor 310 is an example of the detection signal receiving unit described in the claims.

[Operation of projection system]
FIG. 3 is a sequence diagram showing a first example of the operation of the projection system according to the first embodiment of the present technique. Hereinafter, the description will be focused on the transmission of the detection result, but in parallel with this, the video signal is transferred from the mobile terminal 100 to the projection device 200, and projection is performed by the projection unit 240 as described above.

When the posture of the mobile terminal 100 changes, the angular velocity and the acceleration are detected by the gyro sensor 130 and the acceleration sensor 140. As a result, the processor 110 of the mobile terminal 100 acquires the sensor information which is the detection result of the angular velocity and the acceleration (711). The short-range wireless communication unit 180 of the mobile terminal 100 transmits this sensor information to the projection device 200 (713).

The short-range wireless communication unit 280 of the projection device 200 receives sensor information from the mobile terminal 100 (714). The processor 210 of the projection device 200 converts the received sensor information into a pan / tilt signal for driving the motor (715). That is, the change in the posture of the mobile terminal 100 is recognized based on the sensor information, and the pan / tilt signal of the motor 360 of the cradle 300 is generated so as to perform the operation corresponding to the change in the posture. For example, if the motor 360 is a stepping motor, the processor 210 will generate its reduction ratio. The processor 210 of the projection device 200 transmits a pan / tilt signal to the cradle 300 via an electrical connection (716). The pan / tilt signal is an example of a control signal for driving a motor, which is described in the claims. Pan is an operation of swinging in the left-right direction, and tilt is an operation of swinging in the up-down direction.

The processor 310 of the cradle 300 receives a pan / tilt signal from the projection device 200 (717). The processor 310 supplies the pan / tilt signal to the motor drive unit 350. The motor drive unit 350 drives the motor 360 by the pan / tilt signal (719).

FIG. 4 is a sequence diagram showing a second example of the operation of the projection system according to the first embodiment of the present technique. In the above example, the processor 210 of the projection device 200 generates the pan / tilt signal, but in this example, it is assumed that the portable terminal 100 generates this pan / tilt signal.

When the posture of the mobile terminal 100 changes, the angular velocity and the acceleration are detected by the gyro sensor 130 and the acceleration sensor 140. As a result, the processor 110 of the mobile terminal 100 acquires the sensor information which is the detection result of the angular velocity and the acceleration (721). Then, the processor 110 converts the sensor information into a pan / tilt signal for driving the motor (722). The short-range wireless communication unit 180 of the mobile terminal 100 transmits this pan / tilt signal to the projection device 200 (723).

The short-range wireless communication unit 280 of the projection device 200 receives a pan / tilt signal from the mobile terminal 100 (724). The processor 210 of the projection device 200 transmits a pan / tilt signal to the cradle 300 via an electrical connection (726).

The processor 310 of the cradle 300 receives a pan / tilt signal from the projection device 200 (727). The processor 310 supplies the pan / tilt signal to the motor drive unit 350. The motor drive unit 350 drives the motor 360 by the pan / tilt signal (729). The operation of the cradle 300 is the same as that of the first example described above.

FIG. 5 is a sequence diagram showing a third example of the operation of the projection system according to the first embodiment of the present technique. In the above example, the mobile terminal 100 and the projection device 200 generate the pan / tilt signal, but in this example, it is assumed that the cradle 300 generates the pan / tilt signal.

When the posture of the mobile terminal 100 changes, the angular velocity and the acceleration are detected by the gyro sensor 130 and the acceleration sensor 140. As a result, the processor 110 of the mobile terminal 100 acquires the sensor information which is the detection result of the angular velocity and the acceleration (731). The short-range wireless communication unit 180 of the mobile terminal 100 transmits this sensor information to the projection device 200 (733). The operation of the mobile terminal 100 is the same as that of the first example described above.

The short-range wireless communication unit 280 of the projection device 200 receives sensor information from the mobile terminal 100 (734). The processor 210 of the projection device 200 transmits sensor information to the cradle 300 via an electrical connection (736).

The processor 310 of the cradle 300 receives sensor information from the projection device 200 (737). Then, the processor 310 converts the sensor information into a pan / tilt signal for driving the motor (738). The processor 310 supplies the pan / tilt signal to the motor drive unit 350. The motor drive unit 350 drives the motor 360 by the pan / tilt signal (739).

[Application example of projection system]
FIG. 6 is a diagram showing a first application example of the projection system according to the first embodiment of the present technique. This application example assumes a drive game. Using the gyro sensor 130 and the acceleration sensor 140 of the mobile terminal 100, it is possible to pan / tilt the projection device 200 by tilting. As a result, by tilting the mobile terminal 100 so as to turn the steering wheel, it is possible to project an image in the tilted direction.

When the user holds the mobile terminal 100 horizontally, the image 611 projected from the projection device 200 is projected on the central portion of the projection surface. When the user tilts the mobile terminal 100 to the left (613), the posture change of the mobile terminal 100 is transmitted to the cradle 300 via the projection device 200, and the cradle 300 tilts the projection device 200 to the left. As a result, the image 612 projected from the projection device 200 is projected on the left side of the projection surface. In this way, it is possible to display the scenery in a specific direction as seen from the driver's seat as an image as if turning the steering wheel while driving.

FIG. 7 is a diagram showing a second application example of the projection system according to the first embodiment of the present technique. This application example assumes a labyrinth (dungeon) exploration game. By enabling the pan / tilt operation of the projection device 200 by tilting the mobile terminal 100, by tilting the mobile terminal 100 as if swinging a searchlight, it is possible to project an image in the labyrinth in the tilted direction. At this time, the map of the labyrinth and the position of the character can be displayed on the screen of the mobile terminal 100. That is, the projection device 200 can project an image different from the screen display of the mobile terminal 100.

When the user holds the mobile terminal 100 horizontally, the position of the image 621 projected from the projection device 200 does not change on the projection plane. When the user tilts the mobile terminal 100 to the right (623), the posture change of the mobile terminal 100 is transmitted to the cradle 300 via the projection device 200, and the cradle 300 tilts the projection device 200 to the right. As a result, the position of the image 622 projected from the projection device 200 changes to the right. In this way, the image can be displayed as if the searchlight was shaken in the labyrinth, and the treasure chest can be found as in this example.

FIG. 8 is a diagram showing a third application example of the projection system according to the first embodiment of the present technique. This application example assumes an FPS (First-Person Shooter) game. This FPS game is a kind of game that moves in the space in the game from the viewpoint of the main character and fights against the enemy. By enabling the pan / tilt operation of the projection device 200 by tilting the mobile terminal 100, it is possible to project an arbitrary image so as to magnify and display the target from the scope of the rifle. At this time, on the screen of the mobile terminal 100, it is possible to display the display from the human line of sight and the interface for performing the movement operation of the character. That is, the projection device 200 can project an image different from the screen display of the mobile terminal 100.

When the user holds the mobile terminal 100 horizontally, the position of the image 631 projected from the projection device 200 does not change on the projection plane. When the user tilts the mobile terminal 100 to the right (633), the posture change of the mobile terminal 100 is transmitted to the cradle 300 via the projection device 200, and the cradle 300 tilts the projection device 200 to the right. As a result, the position of the image 632 projected from the projection device 200 changes to the right. In this way, the image can be displayed as if the action of swinging the rifle was performed while looking at the scope of the rifle, and the enemy soldier can be found as in this example.

9 and 10 are diagrams showing a fourth application example of the projection system according to the first embodiment of the present technique. This application example assumes a 360-degree video display. By enabling the pan / tilt operation of the projection device 200 by tilting or sliding the mobile terminal 100, it is possible to project a 360-degree image in the desired direction.

For example, as shown in FIG. 9, when a slide operation in the upper left direction is performed on the mobile terminal 100 while displaying the image 652 of a specific portion in the 360-degree image 651, the image 653 in the upper left direction portion. Can be displayed.

Further, as shown in FIG. 10, when the user holds the mobile terminal 100 horizontally, the position of the image 641 projected from the projection device 200 does not change on the projection surface. When the user tilts the mobile terminal 100 to the upper left (643) or slides it to the upper left (644), the posture change of the mobile terminal 100 is transmitted to the cradle 300 via the projection device 200, and the cradle 300 moves the projection device 200. Tilt to the upper left. As a result, the position of the image 642 projected from the projection device 200 changes to the upper left. In this way, the 360-degree image of the portion desired by the user can be projected so that the image in the direction in which the mobile terminal 100 is moved is displayed. That is, not only the above-mentioned game example, but also this embodiment can be applied to video display in general, and can be widely applied to, for example, AR (Augmented Reality) and the like.

As described above, in the first embodiment of the present technology, the detection result of the change in posture of the mobile terminal 100 is transferred to the cradle 300 via the projection device 200. As a result, the cradle 300 changes the posture of the projection device 200 according to the change in the posture of the mobile terminal 100, and the projection position of the image can be changed in conjunction with the change in the posture of the mobile terminal 100.

[First modification]
FIG. 11 is a diagram showing a first modification of the projection system according to the first embodiment of the present technique. In the above-described embodiment, the video signal is supplied from the mobile terminal 100 to the projection device 200 by the network communication unit, but the video signal may be supplied by another method. In this first modification, it is assumed that the image stored in the memory card 231 is displayed.

In this first modification, the projection device 200 includes a memory card interface 230. The memory card interface 230 is an interface for reading the video stored in the memory card 231. The processor 210 of the projection device 200 reads the image stored in the memory card 231 via the memory card interface 230 and stores it in the memory 220. Then, the processor 210 performs a reproduction process of the video signal stored in the memory 220. Since other configurations are the same as those in the above-described embodiment, detailed description thereof will be omitted. The memory 220 and the memory card 231 are examples of the storage units described in the claims.

[Second modification]
FIG. 12 is a diagram showing a second modification of the projection system according to the first embodiment of the present technique. In this second modification, the mobile terminal 100 includes an audio output unit 170, and the projection device 200 includes an audio output unit 270. The audio output unit 170 is an example of the first audio output unit described in the claims, and the audio output unit 270 is an example of the second audio output unit described in the claims.

The audio output unit 170 and the audio output unit 270 can output different audio. For example, the BGM (Back Ground Music) of the game is output from the audio output unit 170 of the mobile terminal 100, while the sound generated in the video (for example, the metal detection sound in the labyrinth) is output from the audio output unit 270 of the projection device 200. Is output. This makes it possible to improve the sense of presence on the projection surface of the projection device 200.

[Third variant]
In the above-described embodiment, it is assumed that the mobile terminal 100, the projection device 200, and the cradle 300 are each one. However, a plurality of these may be provided for each of the system as a whole. In that case, it is assumed that one set of projection devices 200 and cradle 300 are associated with one mobile terminal 100, and a plurality of them are provided. For example, a game character is assigned to each of the mobile terminals 100, and the projection position of the character is changed according to the posture change of the corresponding mobile terminal 100. As a result, it is possible to realize a game in which the characters operate in cooperation with each other.

<2. Second Embodiment>
[Projection system configuration]
FIG. 13 is a diagram showing a functional configuration example of the projection system according to the second embodiment of the present technology.

In this second embodiment, the detection result of the posture change detected in the mobile terminal 100 is directly supplied to the cradle 300 without going through the projection device 200. Therefore, in this second embodiment, the cradle 300 includes a short-range wireless communication unit 380 and performs short-range wireless communication with the mobile terminal 100. Through this short-range wireless communication, the cradle 300 receives the detection result obtained by the gyro sensor 130 and the acceleration sensor 140 of the mobile terminal 100. Since other configurations are the same as those in the above-described embodiment, detailed description thereof will be omitted.

[Operation of projection system]
FIG. 14 is a sequence diagram showing a first example of the operation of the projection system according to the second embodiment of the present technique.

When the posture of the mobile terminal 100 changes, the angular velocity and the acceleration are detected by the gyro sensor 130 and the acceleration sensor 140. As a result, the processor 110 of the mobile terminal 100 acquires the sensor information which is the detection result of the angular velocity and the acceleration (741). The short-range wireless communication unit 180 of the mobile terminal 100 transmits this sensor information to the cradle 300 (743).

The short-range wireless communication unit 380 of the cradle 300 receives sensor information from the mobile terminal 100 (744). Then, the processor 310 of the cradle 300 converts the sensor information into a pan / tilt signal for driving the motor (745). The processor 310 supplies the pan / tilt signal to the motor drive unit 350. The motor drive unit 350 drives the motor 360 by the pan / tilt signal (749).

Although omitted in this figure, an image is projected from the projection unit 240 of the projection device 200 in parallel with this.

FIG. 15 is a sequence diagram showing a second example of the operation of the projection system according to the second embodiment of the present technique. In the above example, the processor 310 of the cradle 300 generates the pan / tilt signal, but in this example, it is assumed that the mobile terminal 100 generates this pan / tilt signal.

When the posture of the mobile terminal 100 changes, the angular velocity and the acceleration are detected by the gyro sensor 130 and the acceleration sensor 140. As a result, the processor 110 of the mobile terminal 100 acquires the sensor information which is the detection result of the angular velocity and the acceleration (751). Then, the processor 110 converts the sensor information into a pan / tilt signal for driving the motor (752). The short-range wireless communication unit 180 of the mobile terminal 100 transmits this pan / tilt signal to the cradle 300 (753).

The short-range wireless communication unit 380 of the cradle 300 receives a pan / tilt signal from the mobile terminal 100 (754). The processor 310 supplies the pan / tilt signal to the motor drive unit 350. The motor drive unit 350 drives the motor 360 by the pan / tilt signal (759).

As described above, in the second embodiment of the present technology, the detection result of the change in posture of the mobile terminal 100 is directly transferred to the cradle 300 without going through the projection device 200. As a result, the cradle 300 changes the posture of the projection device 200 according to the change in the posture of the mobile terminal 100, and the projection position of the image can be changed in conjunction with the change in the posture of the mobile terminal 100.

The first to third modifications described in the first embodiment described above can also be applied to the second embodiment.

<3. Third Embodiment>
[Projection system configuration]
FIG. 16 is a diagram showing a functional configuration example of the projection system according to the third embodiment of the present technology. In the first and second embodiments described above, it is assumed that the projection device 200 and the cradle 300 are configured as independent devices, respectively, but in the third embodiment, the projection device 200 includes a motor. It is assumed that it has the same function as the cradle. That is, it is configured as a device in which a projection device and a cradle are integrated.

The projection device 200 according to the third embodiment includes a processor 210, a memory 220, a projection unit 240, a short-range wireless communication unit 280, a network communication unit 290, and a motor drive unit 250 and a motor 260. The motor 260 is a power source that generates power for rotating the projection device 200 up, down, left, and right. As the motor 260, for example, a stepping motor is assumed. The motor drive unit 250 is a mechanism for driving the motor 260.

Since other configurations are the same as those of the first and second embodiments described above, detailed description thereof will be omitted.

[Operation of projection system]
FIG. 17 is a sequence diagram showing a first example of the operation of the projection system according to the third embodiment of the present technique.

When the posture of the mobile terminal 100 changes, the angular velocity and the acceleration are detected by the gyro sensor 130 and the acceleration sensor 140. As a result, the processor 110 of the mobile terminal 100 acquires the sensor information which is the detection result of the angular velocity and the acceleration (761). The short-range wireless communication unit 180 of the mobile terminal 100 transmits this sensor information to the projection device 200 (763).

The short-range wireless communication unit 280 of the projection device 200 receives sensor information from the mobile terminal 100 (764). Then, the processor 210 of the projection device 200 converts the sensor information into a pan / tilt signal for driving the motor (765). The processor 210 supplies a pan / tilt signal to the motor drive unit 250. The motor drive unit 250 drives the motor 260 by the pan / tilt signal (769).

Although omitted in this figure, an image is projected from the projection unit 240 of the projection device 200 in parallel with this.

FIG. 18 is a sequence diagram showing a second example of the operation of the projection system according to the third embodiment of the present technique. In the above example, the projection device 200 generated the pan / tilt signal, but in this example, it is assumed that the mobile terminal 100 generates this pan / tilt signal.

When the posture of the mobile terminal 100 changes, the angular velocity and the acceleration are detected by the gyro sensor 130 and the acceleration sensor 140. As a result, the processor 110 of the mobile terminal 100 acquires the sensor information which is the detection result of the angular velocity and the acceleration (771). Then, the processor 110 converts the sensor information into a pan / tilt signal for driving the motor (772). The short-range wireless communication unit 180 of the mobile terminal 100 transmits this pan / tilt signal to the projection device 200 (773).

The short-range wireless communication unit 280 of the projection device 200 receives a pan / tilt signal from the mobile terminal 100 (774). The processor 210 of the projection device 200 supplies the pan / tilt signal to the motor drive unit 250. The motor drive unit 250 drives the motor 260 by the pan / tilt signal (779).

As described above, in the third embodiment of the present technology, the detection result of the change in posture of the mobile terminal 100 is transferred to the projection device 200. As a result, the projection device 200 can change its own posture according to the change in the posture of the mobile terminal 100, and can change the projection position of the image in conjunction with the change in the posture of the mobile terminal 100.

The first to third modifications described in the first embodiment described above can also be applied to the third embodiment.

As described above, in the embodiment of the present technology, by changing the posture of the projection device 200 according to the detection result of the change in the posture of the mobile terminal 100, the projection of an image is linked to the change in the posture of the mobile terminal 100. The position can be changed.

In the above-described embodiment, it is assumed that the posture of the projection device 200 is changed according to the detection result of the change in the posture of the mobile terminal 100, but the posture of the projection device 200 is changed according to the operation on the screen of the mobile terminal 100. You may let me. For example, when the user instructs a change in the image by an operation of poking the screen of the mobile terminal 100 (tap operation) or an operation of tracing on the screen (slide operation), the projection device 200 may be rotated or the like. ..

It should be noted that the above-described embodiment shows an example for embodying the present technology, and the matters in the embodiment and the matters specifying the invention within the scope of claims have a corresponding relationship with each other. Similarly, the matters specifying the invention within the scope of claims and the matters in the embodiment of the present technology having the same name have a corresponding relationship with each other. However, the present technique is not limited to the embodiment, and can be embodied by applying various modifications to the embodiment without departing from the gist thereof.

Further, the processing procedure described in the above-described embodiment may be regarded as a method having these series of procedures, or as a program for causing a computer to execute these series of procedures or as a recording medium for storing the program. You may catch it. As this recording medium, for example, a CD (Compact Disc), MD (MiniDisc), DVD (Digital Versatile Disc), memory card, Blu-ray Disc (Blu-ray (registered trademark) Disc) and the like can be used.

It should be noted that the effects described in the present specification are merely examples and are not limited, and other effects may be obtained.

The present technology can have the following configurations.
(1) A mobile terminal that detects changes in one's posture,
A projection device that reproduces video signals and projects them onto a projection surface,
A projection system including a cradle that supports the projection device and changes the posture of the projection device according to the detection result of the mobile terminal.
(2) The projection system according to (1), wherein the mobile terminal detects a change in posture by using at least one of an acceleration sensor and a gyro sensor.
(3) The cradle includes a motor that changes the posture of the projection device and a motor drive unit that drives the motor.
The mobile terminal, the projection device, or the cradle, according to the above (2), which includes a control signal generation unit that generates a control signal for driving the motor based on a change in the posture of the mobile terminal. Projection system.
(4) The projection system according to any one of (1) to (3), wherein the mobile terminal supplies the video signal to the projection device.
(5) The projection system according to any one of (1) to (3), wherein the projection device includes a storage unit for storing the video signal, and reads the video signal from the storage unit to reproduce the video signal.
(6) The mobile terminal includes a first audio output unit.
The projection device includes a second audio output unit.
The projection system according to any one of (1) to (5) above, wherein the first and second audio output units output different audio signals corresponding to the video signals.
(7) The projection system according to any one of (1) to (6) above, wherein the mobile terminal, the projection device, and the cradle are set as one set, and a plurality of sets are provided.
(8) A detection signal receiving unit that receives a change in the posture of the mobile terminal as a detection result,
A control signal generation unit that generates a control signal for changing its own posture based on the detection result, and a control signal generation unit.
A projection device including a control signal transmitting unit that transmits the control signal to a cradle for supporting itself and a projection unit that projects a video signal in a projection direction based on the detection result.
(9) A detection signal receiving unit that receives a change in the posture of the mobile terminal as a detection result,
A control signal generation unit that generates a control signal for changing its own posture based on the detection result, and a control signal generation unit.
The motor that changes its own posture and
A motor drive unit that drives the motor according to the control signal,
A projection device including a projection unit that projects a video signal in a projection direction based on the detection result.
(10) A detection signal receiving unit that receives a change in the posture of the mobile terminal as a detection result,
A motor that changes the posture of the projection device,
A control signal generation unit that generates a control signal for driving the motor based on the detection result, and a control signal generation unit.
A motor driving unit that drives the motor according to the control signal is provided.
A cradle that supports the projection device.

100 Mobile terminal 110 Processor 130 Gyro sensor 140 Acceleration sensor 170 Audio output unit 180 Short-range wireless communication unit 190 Network communication unit 200 Projection device 210 Processor 220 Memory 230 Memory card interface 231 Memory card 240 Projection unit 250 Motor drive unit 260 Motor 270 Audio Output unit 280 Short-range wireless communication unit 290 Network communication unit 300 Cradle 310 Processor 350 Motor drive unit 360 Motor 380 Short-range wireless communication unit

Claims (10)

A mobile terminal that detects changes in one's posture,
A projection device that reproduces a part of the whole image according to the detection result of the mobile terminal and projects it on the projection surface.
A projection system including a cradle that supports the projection device and changes the posture of the projection device according to the detection result. The projection system according to claim 1, wherein the mobile terminal detects a change in posture by using at least one of an acceleration sensor and a gyro sensor. The cradle includes a motor that changes the posture of the projection device and a motor drive unit that drives the motor.
The projection system according to claim 2, wherein any of the mobile terminal, the projection device, and the cradle includes a control signal generation unit that generates a control signal for driving the motor based on a change in the posture of the mobile terminal. .. The projection system according to claim 1, wherein the mobile terminal supplies the video signal to the projection device. The projection system according to claim 1, wherein the projection device includes a storage unit for storing the video signal, and reads the video signal from the storage unit to reproduce the video signal. The mobile terminal includes a first audio output unit.
The projection device includes a second audio output unit.
The projection system according to claim 1, wherein the first and second audio output units output different audio signals corresponding to the video signals. The projection system according to claim 1, wherein the mobile terminal, the projection device, and the cradle are set as one set, and a plurality of sets are provided. A detection signal receiver that receives changes in the posture of the mobile terminal as a detection result,
A control signal generation unit that generates a control signal for changing its own posture based on the detection result, and a control signal generation unit.
With a control signal transmitter that transmits the control signal to a cradle to support itself
A projection device including a projection unit that reproduces a part of a video signal corresponding to the detection result of the entire video and projects it in a projection direction based on the detection result. A detection signal receiver that receives changes in the posture of the mobile terminal as a detection result,
A control signal generation unit that generates a control signal for changing its own posture based on the detection result, and a control signal generation unit.
The motor that changes its own posture and
A motor drive unit that drives the motor according to the control signal,
A projection device including a projection unit that reproduces a part of a video signal corresponding to the detection result of the entire video and projects it in a projection direction based on the detection result. A detection signal receiver that receives changes in the posture of the mobile terminal as a detection result,
A motor that changes the posture of the projection device that reproduces a part of the video signal according to the detection result and projects it on the projection surface .
A control signal generation unit that generates a control signal for driving the motor based on the detection result, and a control signal generation unit.
A motor driving unit that drives the motor according to the control signal is provided.
A cradle that supports the projection device.

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